Curtain-roller



E. G. SIMPSON.

CURTAIN ROLLER.

APPLICATION FILED SEPT.8.1919.

Patented June 22, 1920.

I] rw owtm 22. 077 67am f/m/lmfl UNITED STATES PATENT OFFICE.

EMORY GLENN SIMPSON, OF DETROIT, MICHIGAN, ASSIGNOR T0 TERNSTEDT MANU- FACTURING CO., OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

CURTAIN-ROLLER,

Specification of Letters Patent. Patented J 11119 22, 1920 Application filed September a, 1919. Serial No. 322,241.

To all whom it may concern.

Be it known that I, EMORY GLENN Sunr- SON, a citizen-of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvementsin-urtain-Rollers, of which the following is a specification.

This invention relates to curtain rollers, and has for its object a curtain roller assembly which is made almost entirely from stamped parts that can be assembled without the necessity of solder, welding or s 1m1- lar fastening means. The roller is provided with a clutch which is assembled without riveting and which is noiseless. This clutch is also located near the middle of the roll Where it is not likely to be jammed by dropping and is out of reach of dust. This and other objects will better appear when the roller construction is fully understood.

In the drawings,-

Figure 1 is a longitudinal section of the roller and its supporting brackets.

Fig. 2 is a section on the line 2-2 of Fig. 1.

1 Fig.

Fig. 4 is a section on the line 4- 1 of Fig. 1, detailing the clutch.

3 is a section on the line 33 of Fig. 5 isa section on the line 5-5 of Fig. 1. A

Fig. 6 is an end elevation of the right hand felt washer cup shown in Fig. 1.

a designates the barrel of the curtain roller which is provided with the lock seam b. c, c designates the two curtain roller brackets which are provided with short hollow studs d, each of which has a struck-in spur e for the purpose of engaging halved end f of the curtain roller rod.

brackets are slipped over the halved outer ends of the rods and screwed to the support. Instead of having a single curtain rod that extends from end to end through the barrel, as is customary, a two-part rod formed by the rod g and the rod h is employed. This results in economy in material and is a most useful arrangement from the standpoint of large production. The rod does not always have to-be produced to fit the barrel, that is, the barrel may vary in length and yet the same curtain rods used to mount the roller.

thi} hese' hollow studs serve to hold the curtain roller. rods non-rotatably in the brackets when the Each curtain rod 9 and h has a ring boss 71 upset thereon to hold the other parts lon itudinally in place. For instance, taking t e left hand end of the roller, a sheet metal plug and washer retainer j fits into the left hand end of the barrel, is doubled upon itself to form a flange k to guide the curtain, and is turned in at its center to form a hub Z that engages the outside of the boss 71. A pair of felt washers m are securely fixed in this retainer when the lip n is turned down; hence when the inner washer is forced over the boss i, this end of the barrel is securely secured to the rod g. The same construction is used at the opposite end of the barrel except that an additional cup 0, detailed in Fig. 6, is pinched in. This cup 0 is provided with a pressed-in spring-seat g, which would be a complete annulus except for the two straps 1- that are not punched in with the spring-seat. This seat is adapted to accommodate the last turn of the torsional spring 8 and hence act as .a spring abutment. he two straps 1' afford something to which the end of the spring may be fastened, While the other end of the s ring is secured to the rod it running throug the perforation t. u is a blotting-paper lining for the barrel adjacent the spring to deaden .which can rise and fall the gravity dogs 4. These dogs are housed on one side by the walls of the slots of the dog-carrier and the other by the cup 2. The rod h is cut away at its inner end and provided with a longtudinal slot in the cut-away portion, which is V-shaped in cross section as shown at 5,

Fig. 3. *This slot has approximatel a 135 degree opening, while the point of t I e pawl is a right angle.

Referring to Fig. 4, it will be seen that the guide slot 3 does not run radially but on relatively long chords. This arrangement, together with the 135 degree opening of the dog-engaging slot 5, is such that gravity strikes the opposite wall of the slot 5 and the dog is simply forced outwardly in its guide and ceases to act as an impediment to the turning of the dog-carrier; hence the dog-carrier and the barrel of the roller can always turn in a contrary direction to the exertion of the spring but they cannot turn in thesame direction as the exertion of thespring except when the movement is rapid enough to prevent the pawl falling down.

into the V-groove. Obviously when the curtain is pulled down slightly and then allowed to move upwardly quickly, the dog has not the time to drop into the V-groove but is also restrained trom dropping by centrifugal force. This arrangement makes an obvious improvement over the usual pawls that are riveted on to a pawl-carrier and which require an upsetting operation and are quite liable to become loosened or clamped. The clutch is thus located near the middle of the roll out of reach of dust and in a position where it is little likely to be 'ammed by dropping the roll.

t will be noted that the end plugs j, the cups for the washers, and the clutch cup 2,

are all provided with recesses, of which such a one as shown at 6 in Fig. 6 is an example. This is to receive the lock seam of the barrel and also acts as a key to key. these various members to the barrel. This does awa with spot-welding, soldering or otherwise astening the parts. lhey are tightly fitted into the barrel so as to prevent any unnecessary longitudinal. movement, while the key nonrotatably ties them to the barrel.

What I claim is:

1. A curtain roller, having in combination, one or more rods for supporting the same, a barrel supported on the rod and provided with a lock seam, and one or more cups provided with washers and supported in the barrel and having a recess in the pein onedirection and to be forced out of the recess when'turning in the opposite direct1on, and means for so supporting the dogs about the rod.

3. In a curtain roller, the combination of a rod provided with a longitudinal recess therein V-shaped in cross section, a dogcarrier provided witha doguide, and an unattached dog slidable in t e dog-guide, the parts being so arranged that when the dog-carrier rotates in one direction the dog jams a inst one.wall of the recess of the rod an when the dog-carrier rotates in the opposite direction the dog strikes the opposite wall of the recess and is caused to withdraw outwardly in the dog-guide.

4. Ina curtain roller, the combination of a rod provided with a recess in the end thereof, a disk-like dog-carrier provided with a guide disposed on long chords of the disk, a dog slidable in the guide, the recess being arranged so that when the disk-like dog-carrier rotates in one direction the dog jams against .one wall of the recess and when the disk-like dog-carrier rotates in the opposite direction the dog is forced outwardly in the guide to allow such rotation of the dog-carrier.

5. In a curtain roller, the combination of a rod provided with a slot therein V-like in cross section, a disk-like dog-carrier comprising a pair of guides disposed on long chords of the disk at opposite sides of the center, and dogs slidable one in each guide, substantially as described.

6-. In a curtain roll, the combination of a rod provided with a recess, a barrel, a dogcarrier located near the longitudinal middle of the barrel, and a dog supported by the dog-carrier and adapted to engage the recess of the rod when the roll rotates in one direction slowly. v

In testimony whereof I aflix my signature.

EMORY GLENN SIMPSON. 

